Al-Hakim

al-Hakim bi-Amr Allah (985-13 February 1021) was the sixth Fatimid caliph, reigning from 14 October 996 to 13 February 1021, succeeding al-Aziz Billah and preceding az-Zahir.

Biography
al-Hakim bi-Amr Allah was born in 985, the son of Caliph al-Aziz Billah and his Melkite Christian slave al-Azizah. He was the first Fatimid ruler to have been born in Egypt. He succeeded his father at the age of eleven when his father died in 996, and he was the half-brother of the famous Sitt al-Mulk. In 1011, the Abbasid Caliphate passed the Baghdad Manifesto, saying that Ismaili Shia Islam was not Islam, and that the Fatimids were not descendants of Ali. The Turks and Berbers of al-Hakim's army fought against each other, contributing to more instability in the Fatimid Caliphate, and al-Hakim was variably known as either a righteous and just ruler or a mad and despotic tyrant. On 13 February 1021, he mysteriously disappeared while heading to a mystical physician near Cairo, with only his bloodstained garments and donkey being left behind. Some beliee that Sitt al-Mulk assassinated him.